An 8 kg box is at rest on the ground and is pushed by a force for 12 m. The box ends up going 3 m/s (there is no friction) A) What was the energy before the box was pushed?
B) What was the energy after?
C) Does the energy before equal to the energy after?
D) Put the above information into the Law of Conservation of Energy equation.
E) Solve for the force.

In which situation has the independent variable for the experiment been changed? check all that apply. changed from counting the number of duckweed at day 0 and day 14 to counting them every day changed from testing duckweed growth in beakers to testing duckweed growth in large outdoor tanks changed from testing the effect of ph on duckweed growth to testing the effect of light levels on duckweed growth changed from testing the effect of acid ph on duckweed growth to testing the effect of basic ph on duckweed growth

However, had it been a real sound, the sound's pitch would have been increased by the doppler effect, since the falcon was moving the source of the sound. perpendicular to away from towards at the same speed as

Critical mass is the of material required to produce a chain reaction. a.) minimum amount b.) atomic mass c.) precise amount d.) maximum amount